Local Anesthetic Wound Infusion and Functional Recovery After Colon Surgery

This is a double blinded randomized controlled trial in patients undergoing colon open surgery. The purpose is to evaluate the effectiveness of two different analgesic techniques on functional recovery after surgery.
Twenty five patients will receive thoracic epidural analgesia plus patient controlled analgesia (PCA) (epidural analgesia group) and 25 patients wound infiltration of local anesthetic plus PCA (wound infusion group).
Hypothesis: the postoperative recovery of patients receiving local anesthetic wound infusion will be faster than patients receiving thoracic epidural analgesia.
Functional recovery, pain intensity, opioid consumption and side effects, length of hospital stay and biological markers of inflammation after surgery will be measured in both groups.